/*
 * Created on 1.6.2004
 * Copyright Basen Ltd.
 */
package net.killeri.jspwiki;

import java.io.IOException;

import javax.servlet.jsp.JspWriter;

import com.ecyrd.jspwiki.*;
import com.ecyrd.jspwiki.providers.ProviderException;
import com.ecyrd.jspwiki.tags.WikiTagBase;
import com.ecyrd.jspwiki.parser.MarkupParser;

/**
 * @author killer
 *
 * Copyright BaseN Ltd.
 */
public class InsertLeftMenuTag extends WikiTagBase {

    public static final int HTML  = 0;
    public static final int PLAIN = 1;

    protected String m_pageName = null;
    private   int    m_mode = HTML;

    public void setPage( String page )
    {
        m_pageName = MarkupParser.cleanLink(page);
    }

    public String getPage()
    {
        return m_pageName;
    }

    public void setMode( String arg )
    {
        if( "plain".equals(arg) )
        {
            m_mode = PLAIN;
        }
        else
        {
            m_mode = HTML;
        }
    }

    public final int doWikiStartTag()
    throws IOException,
           ProviderException
{
    WikiEngine engine = m_wikiContext.getEngine();
    WikiPage   page;

    //
    //  NB: The page might not really exist if the user is currently
    //      creating it (i.e. it is not yet in the cache or providers), 
    //      AND we got the page from the wikiContext.
    //

    if( m_pageName == null )
    {
        page = m_wikiContext.getPage();
        if( !engine.pageExists(page) ) return SKIP_BODY;
    }
    else
    {
        page = engine.getPage( m_pageName );
    }

    String pageName = (String) page.getAttribute( "leftmenu" );
    if( pageName == null ) pageName = "LeftMenu";
    page = engine.getPage( MarkupParser.cleanLink(pageName) );
    
    if( page != null )
    {
        JspWriter out = pageContext.getOut();

        switch(m_mode)
        {
          case HTML:
            out.print( engine.getHTML(m_wikiContext, page) );
            break;
          case PLAIN:
            out.print( engine.getText(m_wikiContext, page) );
            break;
        }
    }

    return SKIP_BODY;
}

}